Shade-holder.



N. KROHN.

SHADE HOLDER.

APPLICATION FILED MAY 11, 1913.

1,081,756. Patented Dec. 16, 1913.

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an snares rarnnr orricn NELSKROHN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS 8c WESTLAEE COMPANY, 01? CHICJHGO', ILLINOIS, A CORPORATION OF ILLINOIS.

SHADE-HOLDER.

Specification of Letters Patent.

Patented Dec. 113, 1913.

Application filed May 17, 1913. Serial No. 768,366.

'0 all whom it may concern Be it known that I, NELS Knot-1N, a citizen of the United States, and resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Shade-H lders, of which the following is a specification, and which are illustrated in the accompanying draw' ings, forming a part thereof.

The invention relates to devices for supporting lamp shades and similar articles.

It principally contemplates a shade holder so constructed as to serve to yieldingly retain the shade when open and to positively grip the shade without breakage when closed.

The object of the invention is to provide a shade holder of simple and inexpensive construction and so designed as to permit of the shade being yieldingly held thereby without adjustment of the parts.

In the accompanying drawings, F igure 1 is a side elevation of a lamp socket equipped with a shade holder of a form provided by the invention, the parts of the holder and details of the shade being shown in cross section; Figs. 2 and 3 are detail perspective and plan views, respectively, showing one form of a shade retaining ringovhicn may be employed in connection with the device, and, Fig. 1 is an inverted plan view of the shatie-supporting ring, a part of the same being broken away.

Parts of an electric lamp holder socket and lamp shade are indicated in the drawings at 10 and 11, respectively. The shade 11 has the usual out-turned neck flange 12. The holder socket 10 has an externally threaded flange 13.

in carrying out the invention an internally threaded ring 1 1 is employed. This ring has threaded engagement with the externally threaded flange 13 of the holder socket, and is preferably provided with a pair of inturned flanges 15, 16, both located adjacent the forward edge of the ring but spaced apart to form an annular groove 26 between them.

A split flexible ring 17 is provided for directly engaging the neck flange 12 of the shade. This ring is shown as being formed fromsheet metal, and has a substantially flat marginal portion 18, and a plurality of curved elastic fingers 19 extending inwardly from the marginal portion 18. The fingers 19 are shown as being separated by slots or notches 20 extending outwardly from the inner edge of the ring. The notches 20 preferably terminate in enlarged openings 21, principally located in the substantially flat marginal portion 18 ot' the ring and thereby increasing its flexibility. The curved form of the fingers 19 is such as to provide an outwardly facing annular groove 27.

In the use of the device a continuous contractile coil spring is seated in the groove 27, and the flat marginal portion 18 of the ring 17 is entered in the groove 26 of the ring 14. The ring 11 is then applied to the flange 13. If desired, an annular groove 24 may be formed upon the ,inner face of the ring 14, adjacent its rear edge, in which case a split ring.23 will be elastically seated in the groove, 2-1 to limit the ,outwardmovement of the ring 14 upon the flange 13 in the manner provided by the invention disclosed in Patent No. 998,971, issued July 27, 1911 of the application of Thomas A. I..egge and Peter Huston.

The shade holder is opened for the insen tion or removal of a shade 11 by turning the ring 14 outwardly upon the flange 13 to the limit provided by the use of the stop ring 23. When the parts are in this position, the

elasticity of the continuous coil spring 22, provides for a suflicicnt yielding of the ring 17 and its fingers 19 to permit a shade to be thrust into or forcibly withdrawn from the holder while still serving to retain a shade against falling from the holder by its own weight. Turning the ring 14., inwardly upon the flange 13, serves to additionally contract the coil spring 22 for exerting su't" ticient pressure against the ring 17 to cause the fingers 19 to positively grip the flange 12 of the shade. This last is brought about by the formation of an inwardly facing oblique annular surface 25 upon the flange 13, the same serving to compress the coil spring ring 22, by a cam engagement therewith, as the spring is forced against the flange by the inward movement of the ring 14.

The use of the two flanges 15, 16, forming the annular groove 26, between them for the reception of the marginal portion 18 of the ring 17, prevents the last mentioned ring from being displaced by lateral pressure upon the shade, As shown, the flange, 15, is of sufficient length to extend over the coil EspringIQQ, in any position of the latter, thereby providing a shoulder for compress ing the coil spring against the oblique cam surface during theinward movement of the ring let. The elastic fingers 19 of the split ring 17 serve to limit the contraction of. the coil spring 22 for preventing its dislodgment when the shade is r moved. These fingers will nevertheless yield to permit a further contraction of the coil spring 22 when the latter is forced against the annular shoulder 25. The invention provides {a holder which will temporarily retain the y le without adjustment. An attendant may accordingly insert shades into a plu- I'ality of the holders without being requiret to adjust any of them until all have been supplied with shades.

ll claim as my invention 1. In a shade holder, in combination, a support, a compression ring in threaded engagement with the support, a continuous coil spring located between the support and the support having an inwardly facing oblique annular shoulder, an annulus having threaded engagement, with the support and having an inwardly faclng annular groove adjacent its outer end, a ring comprising an outstanding flange seated in the groove of the annulus and a plurality of backwardly extending elastic fingers, and a continuous contractile coil spring surrounding the elastic fingers of the said ring.

4r. In a shade holder, in combination, a support having an inwardly facing oblique annular shoulder, an annulus having thread ed engagement with the support and having an inwardly facing annular groove adjacent its outer end, a split ring comprising an outstanding flange seated in the groove of the annulus and a plurality of backwardly extending elastic fingers, and a continuous contractile coil spring surrounding the elastic fingers of the said ring.

5. In a shade holder, in combination, a

support having an inwardly facing oblique annular shoulder, an annulus having threaded engagement with the support and having an inwardly facing annular groove adjacent its outer end, a ring comprising an outstanding flange seated in the groove of the annulus and a plurality of backwardly extending inwardly curved fingers, and a continuous contractile coil spring surrounding the elastic fingers of the said ring.

NELS KR HN.

Witnesses:

CHARLES E. GILLsoN,

Louis K. GILLSON. 

